Although screws are small, they play an important role in various fields. As a special kind of screw, precision electronic screws are widely used in industry, and they are ubiquitous in daily life. In home decoration, the total number of various screws in doors, windows, furniture, pipelines, home appliances, etc. can reach hundreds. Although the total value of these screws will not exceed a thousand yuan, their quality cannot be ignored. For many years, due to the relatively simple screw production technology and low market entry barriers, inferior special screws have flooded the market, making it difficult for ordinary consumers to distinguish between good and bad.
Inferior screws are easy to fall off on furniture, and the anti-rust treatment of non-standard screws is not good enough, causing rust and water leakage in a short period of time. Low-quality expansion screws can easily cause safety accidents in important places such as chandeliers. So how to purchase high-quality special screws?
1: Measure the outer diameter: The outer diameter of inferior screws is obviously shorter and thinner than qualified screws, and there is no spring washer. Expansion screws that lack spring washers are difficult to secure securely.
2: Observe the appearance: Genuine screws have undergone fine surface treatment, with high gloss, no blisters, and smooth interfaces. Inferior screws have rough workmanship, shallow threads, many burrs, different screw angle widths, too shallow thread grooves, and uneven threads. If low-quality screws are used for furniture, they can easily slip or even break. They are basically disposable products.
What should you pay attention to when using screws:
1. Choose the appropriate screws: There are many types of screws. When fixing items, you should choose the appropriate screw type. For example, anti-theft screws are used to fix license plates, and expansion screws are needed to fix household appliances on the wall. For small items, you can choose screws, etc. When using screws, choose the appropriate type of screwdriver according to the notch of the screw head. Incorrect selection may cause the screw to slip.
2. Prevent screws from rusting: Screws may rust due to humid environment. If the screws are rusty, do not remove them with force. You can spray rust remover on the screws, wait for a while, and then use a screwdriver to remove them.
